Check the listing for details. A AZURELIFE Exercise Core Sliders, Dual Sided Exercise Gliding Discs Use on C.... Color: Blue, Condition: New. Listed at 14.03 USD. Not Only Make You More Beautiful But Also Great Fun. NOTE: When You Use The Plastic Side Down, The Plastic Side of the Core Sliders can Easily be Scratched and Scratch Your Floor. Because of The Material Problem, All This Kind of Exercise Sliders on the Market have this Problem,You Can Try Use it on a Different Surfaces,Such as Carpet, Blanket, Exercise Mat, or Put a Blanket on Your Workout Mat and so on, and also If You Find that Foam Side Slides Very Easily On Your Floors, You Can also Use The Foam Side Down to Workout.